87194816 has 56 divisors (see below), whose sum is σ = 181416960. Its totient is φ = 41529600.

The previous prime is 87194801. The next prime is 87194843. The reversal of 87194816 is 61849178.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140555 + ... + 141173.

Almost surely, 2^87194816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87194816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90708480).

87194816 is an abundant number, since it is smaller than the sum of its proper divisors (94222144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87194816 is a wasteful number, since it uses less digits than its factorization.

87194816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 723 counting only the distinct ones).

The product of its digits is 96768, while the sum is 44.

The square root of 87194816 is about 9337.8164471144. The cubic root of 87194816 is about 443.4352585041.

The spelling of 87194816 in words is "eighty-seven million, one hundred ninety-four thousand, eight hundred sixteen".